COIIOIIiYTULI. 

 Key to the Groups. 



214 I. ^ov'ths globose, ovoid, obovoid, obconic, obcordate, or 

 rarely subcylindric, not compresses as if pinched between the 

 fihfter and thumb and tv^o-lobed pt the top. '^3^pes ^i- to -w of 

 5'ig. 112. Species 1-49. 



Surface '^ubescent, minutely puberulous or covered v/ith min- 

 ute points scarcely amounting to hairs, as viewed with a 

 lens. 



A, Species 1-5. 



Surface glabrous except at the minutely puberulous orifice. 

 '^. oviforme is minutely tuberculate all over, and a few 

 species heve raised dots, all the others are quite smooth. 



AA, Species 6-49. 



Growths uniformly green or more or less tinted with purple, 

 without dots or^ markings, except sometimes in 8, G. j^- 

 cundum; 11, C. '.'/ettsteinii; 12. G, minutum; 14, G, saze- 

 tsnum; and 15, C viridieetum (see also IS, C. trans- 

 lucens) . 



_, B Species 6-15. 



-'lowers yellow C, Species 6-7 



Flowers of soue shade of red or perhaps whitish in 14, 

 G. sexetanum, . Colour unknown in 10, G. subrisiim. 



GG, Species 8-14. 

 Flo\^/ers white (see also 14, ^. saxetanum, and IS, G. 

 translucens) . 



GCG^ Species 15. 



Grov/ths marked with dots or lines. 



BB, Jpecies 16-49 



Dots all scattered and separate (see also 14, G. saxe- 

 tanum; 27, G. lievillei; and 30, G. parvipetalum) . 



D, Species 16-22, 



Some or all of the dots confluent into lines or the 



growths marked with lines not formed of confluent dots. 



32, Species 23-49, 



Top of the grov.'ths flattish or v/ith a broad and 

 shEllow, trough-1'ke transverse depression, or 

 slightly excavated and shallowly cup-shaped (see also 

 33, C. leviculum, and 57, G. signatum). 



^, Species 23-31. 



Top of the growths more or less convex (flattish in 

 srecies 33 and 37), or convex on each side of the 

 centre 1 notch, v;hick does not srre;-'d out over the 

 V:''hole of the top as in some of those under ^. 



EEj Species 32-44, 



